Letter to the Romans 4:13.16-18.
Brothers and sisters: It was not through the law that the promise was made to Abraham and his descendants that he would inherit the world, but through the righteousness that comes from faith.
For this reason, it depends on faith, so that it may be a gift, and the promise may be guaranteed to all his descendants, not to those who only adhere to the law but to those who follow the faith of Abraham, who is the father of all of us,
as it is written, "I have made you father of many nations." He is our father in the sight of God, in whom he believed, who gives life to the dead and calls into being what does not exist.
He believed, hoping against hope, that he would become "the father of many nations," according to what was said, "Thus shall your descendants be."
You descendants of Abraham, his servants,
Sons of Jacob, his chosen ones!
He, the LORD, is our God;
throughout the earth his judgments prevail.
He remembers forever his covenant
which he made binding for a thousand generations.
Which he entered into with Abraham
and by his oath to Isaac.
For he remembered his holy word
to his servant Abraham.
And he led forth his people with joy;
with shouts of joy, his chosen ones.
Holy Gospel of Jesus Christ according to Saint Luke 12:8-12.
Jesus said to his disciples: "I tell you, everyone who acknowledges me before others the Son of Man will acknowledge before the angels of God.
But whoever denies me before others will be denied before the angels of God.
Everyone who speaks a word against the Son of Man will be forgiven, but the one who blasphemes against the holy Spirit will not be forgiven.
When they take you before synagogues and before rulers and authorities, do not worry about how or what your defense will be or about what you are to say.
For the holy Spirit will teach you at that moment what you should say."
Witnessing to Christ with all one's life
Although every disciple of Christ, as far as possible, has the duty of spreading the Faith, Christ the Lord always calls whomever He will from among the number of His disciples, to be with Him and to be sent by Him to preach to the nations (cf. Mark 3:13)…
Yet man must respond to God Who calls, and that in such a way, that without taking counsel with flesh and blood (Gal. 1:16), he devotes himself wholly to the work of the Gospel. This response, however can only be given when the Holy Spirit gives His inspiration and His power. For he who is sent enters upon the life and mission of Him Who "emptied Himself, taking the nature of a slave" (Phil. 2:7). Therefore, he must be ready to stay at his vocation for an entire lifetime, and to renounce himself and all those whom he thus far considered as his own, and instead to "make himself all things to all men" (1 Cor. 9:22).
Announcing the Gospel to all nations, he confidently makes known the mystery of Christ, whose ambassador he is, so that in him he dares to speak as he ought (cf. Eph. 6:19), not being ashamed of the scandal of the Cross. Following in his Master's footsteps, meek and humble of heart, he proves that His yoke is easy and His burden light (Matt. 11:29ff.) By a truly evangelical life, in much patience, in long - suffering, in kindness, in unaffected love, he bears witness to his Lord, if need be to the shedding of his blood. He will ask of God the power and strength, that he may know that there is an overflowing of joy amid much testing of tribulation and deep poverty (2 Cor. 8:2).